My customer wants to publish in grayscale PDF for printing. I configured .appcf file below;
<PDFMode color="mono" defaultLanguage="" fastWebView="no"/>
<Compatibility layers="yes" tagging="inherit">
<ColorProfile defaultCMYK="" defaultGray="" defaultRGB=""/>
<Images epsDPI="600" linked="original"/>
The output looks good (=monocrome) from my eyes, however it includes all CMYK colors when customer analyze it in Adobe Acrobat.
Is it possible to publish true grayschale PDF ?
*I use Styler 6.1 M030.
It appears that the PDFLib monochrome output will be in the form of a CMYK file. However all colours are converted to tints of black. If your customer requires a "true grayscale" (non-CMYK) PDF file then I don't believe that can come directly from Styler (APP) itself. There are plenty of PDF tools capable of manipulating the file after it comes out of Styler (APP). Even Acrobat can do colour-to-grayscale. Another idea is to have the customer implement a preflight step where they check the PDF for non-black ink usage.
BTW if you test with FOSI engine I believe this will use RGB instead.
Was Gareth's input enough for you, or did you have any further questions on this issue? Please let the community if you do. Thanks!